AG-Grid提供了一个paginationChanged事件来响应分页改变。当用户更改页码或每页显示的行数时,会触发此事件。这个事件可以在各种分页选项之间很好地进行交互,并且通常需要与服务器交互以读取新的行数据。这里是一个示例代码,使用AG-Grid和Angular从服务器获取分页数据:
onGridReady(params) {
this.gridApi = params.api;
this.gridColumnApi = params.columnApi;
this.rowData = [];
this.totalRows = null;
this.pageSize = 10;
this.pageNumber = 0;
this.gridApi.showLoadingOverlay();
// fetch first page
this.loadData();
}
loadData() {
const params = {
startRow: this.pageNumber * this.pageSize,
pageSize: this.pageSize
};
this.gridApi.showLoadingOverlay();
this.httpClient.get('/api/getData', {params})
.subscribe((data: any) => {
this.rowData = data.rows;
this.totalRows = data.totalRows;
this.gridApi.hideOverlay();
});
}
onPaginationChanged() {
const newPageSize = this.gridApi.paginationGetPageSize();
const newPageNumber = this.gridApi.paginationGetCurrentPage();
if (this.pageSize !== newPageSize || this.pageNumber !== newPageNumber) {
this.pageSize = newPageSize;
this.pageNumber = newPageNumber;
this.loadData();
}
}
在上面的代码中,我们将paginationChanged事件绑定到onPaginationChanged方法。该方法从gridApi.paginationGetPageSize()和gridApi.paginationGetCurrentPage()获取新的pageSize和pageNumber,然后检查它们是否已更改。如果是,我们更新当前的pageSize和pageNumber,并调用loadData()方法以加载新的行数据。